// class definitions for use in grouping national atlas layers and chapter info

function NAChapter (theId, theShortName, theLongName, theExample, theSortOrder, showIt, theLayers) {
	this.idString = theId;
	this.shortName = theShortName;
	this.longName = theLongName;
  this.example = theExample;
	this.sortOrder = theSortOrder;
	if (typeof showIt == "boolean") {
		this.show = showIt;
	} else {
		this.show = (showIt == 't' || showIt == 'true' || showIt == 1);
	}
	if (theLayers == null || typeof theLayers != "object") {
		this.layers = new Array();
	} else {
		this.layers = theLayers;
	}
}

function NALayerDesc (theId, theAltMldId, theTitle, theMetadataCreationDate, theMetadataOffsiteLink, theMapLink, showIt, theDataItems) {
	this.idString = theId;
	this.altMldId = theAltMldId;
	this.title = theTitle;	
	this.metaDataDate = theMetadataCreationDate;
  this.metaDataOffsiteLink = theMetadataOffsiteLink;
	if (typeof showIt == "boolean") {
		this.show = showIt;
	} else {
		this.show = (showIt == 't' || showIt == 'true' || showIt == 1);
	}
	this.mapLink = theMapLink;
	if (theDataItems == null || typeof theDataItems != "object") {
		this.dataItems = new Array();
	} else {
		this.dataItems = theDataItems;
	}
}

function NADataItem (theId, theType, theFileName, theOffsiteText, theUrl, theRBytes, theCBytes, theCreationDate, showIt) {
	this.idString = theId;
	this.type = theType;
	this.fileName = theFileName;
	this.offsiteText = theOffsiteText;
	this.downloadUrl = theUrl;
	this.rawBytes = theRBytes;
	this.compressedBytes = theCBytes;
	//this.creationDate = theCreationDate.toString();
	this.creationDate = theCreationDate;
	if (typeof showIt == "boolean") {
		this.show = showIt;
	} else {
		this.show = (showIt == 't' || showIt == 'true' || showIt == 1);
	}
}

var allChapters = new Object();
var allLayerDescs = new Object();
var allDataItems = new Object();

function addChapter(id, shortName, longName, example, sortOrder, showIt) {
	var c = new NAChapter(id, shortName, longName, example, sortOrder, showIt);
	allChapters[id] = c;
}

function addLayerDesc (id, altMldId, title, metadataDate, metadataOffsiteLink, parentChapterId, mapLink, showIt) {
	var d = new NALayerDesc (id, altMldId, title, metadataDate, metadataOffsiteLink, mapLink, showIt);
	allLayerDescs[id] = d;
	arrayPush(allChapters[parentChapterId]["layers"], id);
}

function addDataItem (id, type, fName, osText, url, rBytes, cBytes, cDate, parentLayerDescId, showIt) {
	var di = new NADataItem (id, type, fName, osText, url, rBytes, cBytes, cDate, showIt);
	allDataItems[id] = di;
	arrayPush(allLayerDescs[parentLayerDescId]["dataItems"], id);
}
	

addChapter('chpagri', 'Agriculture', 'Agriculture of the United States', 'Agriculture Census 2007 - Crops, Expenses, Farmland...', 2, true);
  addLayerDesc('agcensp020', null, 'Agriculture Census, 2002', '2006-04-01', null, 'chpagri', null, true );
    
    addDataItem('agcensp020', 'Shapefile', 'agcensp020.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/agcensp020.tar.gz', 15459840, 9482555, '2005-06-01', 'agcensp020', true );
	
	addLayerDesc('agcn07', null, 'Agriculture Census, 2007', '2010-06-01', null, 'chpagri', '/mapmaker?AppCmd=CUSTOM&LayerList=opchar%3B2&visCats=CAT-agri,CAT-agri', true );
    
    addDataItem('agcn07', 'Shapefile', 'agcn07p020.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/agcn07p020.tar.gz', 15459840, 9482555, '2010-06-01', 'agcn07', true );

addChapter('chpbio', 'Biology', 'Biology of the United States', 'Bat Ranges, Butterflies, Forests, Invasive Species, Land Cover...', 4, true);
  addLayerDesc('amphibt', null, 'Amphibian Distributions', '2006-04-29', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=amp%3B1&visCats=CAT-bio,CAT-bio', true );
    addDataItem('amphibt', 'DBF', 'amphibt.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/amphibt.tar.gz', 232448, 37192, '2002-03-29', 'amphibt', true );
		
  addLayerDesc('bat000m020', null, 'Bat Ranges', '2006-04-06', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=bat13%3B8&visCats=CAT-bio,CAT-bio', true );
    addDataItem('bat000m020', 'Shapefile', 'bat000m020.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/bat000m020.tar.gz', 28948992, 10550141, '2003-05-06', 'bat000m020', true );
  addLayerDesc('bbsrtsl020', null, 'Breeding Bird Survey Route Locations', '2006-04-04', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=Bird&visCats=CAT-bio,CAT-bio', true );
    addDataItem('bbsrtsl020', 'Shapefile', 'bbsrtsl020.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/bbsrtsl020.tar.gz', 13698048, 10177380, '1999-08-09', 'bbsrtsl020', true );
  addLayerDesc('butflyt', null, 'Butterfly Occurrence', '2006-04-11', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=BflyC&visCats=CAT-bio,CAT-butterfly', true );
    addDataItem('butflyt', 'DBF', 'butflyt.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/butflyt.tar.gz', 2587136, 180118, '2002-02-11', 'butflyt', true );
  addLayerDesc('ecoregp075', null, 'Ecoregions - Bailey', '2006-04-16', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=eco%3B3&visCats=CAT-bio,CAT-bio', true );
    addDataItem('ecoregp075', 'Shapefile', 'ecoregp075.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/ecoregp075.tar.gz', 6921216, 2041563, '2004-03-18', 'ecoregp075', true );
	addLayerDesc('ecoomrp075', null, 'Ecoregions - Omernik', '2006-04-10', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=ecoomr&visCats=CAT-bio,CAT-bio', true );
    addDataItem('ecoomrp075', 'Shapefile', 'ecoomrp075.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/ecoomrp075.tar.gz', 14616576, 10985548, '2005-06-10', 'ecoomrp075', true );
  addLayerDesc('foresti020l', null, 'Forest Cover Types', '2006-04-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=Forcov&visCats=CAT-bio,CAT-bio', true );
    addDataItem('foresti020l', 'GeoTiff', 'foresti020l.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/foresti020l.tar.gz', 4341760, 1701709, '2002-12-20', 'foresti020l', true );
  addLayerDesc('frfrg2i1kml', null, 'Forest Fragmentation - Causes 1 Kilometer Resolution', '2006-04-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=frg&visCats=CAT-bio,CAT-bio', true );
    addDataItem('frfrg2i1kml', 'GeoTiff', 'frfrg2i1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/frfrg2i1kml.tar.gz', 226273280, 9365973, '2004-02-10', 'frfrg2i1kml', true );
  addLayerDesc('frfrg2i270l', null, 'Forest Fragmentation - Causes 270 Meter Resolution', '2006-04-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=frg&visCats=CAT-bio,CAT-bio', true );
    addDataItem('frfrg2i270l', 'GeoTiff', 'frfrg2i270l.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/frfrg2i270l.tar.gz', 732313600, 105538115, '2004-06-24', 'frfrg2i270l', true );
  addLayerDesc('frfrg2i540l', null, 'Forest Fragmentation - Causes 540 Meter Resolution', '2006-04-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=frg&visCats=CAT-bio,CAT-bio', true );
    addDataItem('frfrg2i540l', 'GeoTiff', 'frfrg2i540l.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/frfrg2i540l.tar.gz', 183121920, 28171443, '2004-06-24', 'frfrg2i540l', true );
  addLayerDesc('forfrgi1kml', null, 'Forest Fragmentation - Classification', '2006-04-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=Forest&visCats=CAT-bio,CAT-bio', true );
    addDataItem('forfrgi1kml', 'GeoTiff', 'forfrgi1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/forfrgi1kml.tar.gz', 5488640, 2193913, '2002-12-20', 'forfrgi1kml', true );
  addLayerDesc('afrbeep020', null, 'Invasive Species - Africanized Honey Bees', '2010-06-30', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=afrbee%3B14&visCats=CAT-bio,CAT-invasive', true );
        addDataItem('afrbeep020', 'Shapefile', 'afrbeep020.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/afrbeep020.tar.gz', 14680064, 4718592, '2010-06-30', 'afrbeep020', true );
  addLayerDesc('wdligut', null, 'Invasive Species - Chinese Privet, Ligustrum sinense', '2006-04-11', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=privet&visCats=CAT-bio,CAT-invasive', true );
    addDataItem('wdligut', 'DBF', 'wdligut.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/wdligut.tar.gz', 67584, 10098, '2000-09-06', 'wdligut', true );
  addLayerDesc('wdulext', null, 'Invasive Species - Common Gorse, Ulex europaeus', '2006-04-11', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=gorse&visCats=CAT-bio,CAT-invasive', true );
    addDataItem('wdulext', 'DBF', 'wdulext.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/wdulext.tar.gz', 22016, 5458, '2000-09-06', 'wdulext', true );
  addLayerDesc('wdeupht', null, 'Invasive Species - Leafy Spurge, Euphorbia esula', '2006-04-11', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=spurge&visCats=CAT-bio,CAT-invasive', true );
    addDataItem('wdeupht', 'DBF', 'wdeupht.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/wdeupht.tar.gz', 58880, 10180, '2000-09-06', 'wdeupht', true );
  addLayerDesc('wdlytht', null, 'Invasive Species - Purple Loosestrife, Lythrum salicaria', '2006-04-11', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=loosestrife&visCats=CAT-bio,CAT-invasive', true );
    addDataItem('wdlytht', 'DBF', 'wdlytht.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/wdlytht.tar.gz', 110592, 15274, '2000-09-06', 'wdlytht', true );
  addLayerDesc('wdtriat', null, 'Invasive Species - Tallowtree, Triadica sebifera', '2006-04-24', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=tallow&visCats=CAT-bio,CAT-invasive', true );
    addDataItem('wdtriat', 'DBF', 'wdtriat.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/wdtriat.tar.gz', 38912, 7511, '2000-09-06', 'wdtriat', true );
  addLayerDesc('zmusslx020', null, 'Invasive Species - Zebra Mussel Distribution', '2008-02-25', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=ZebM&visCats=CAT-bio,CAT-invasive', true );
  
    addDataItem('zmusslsx020', 'Shapefile', 'zmusslsx020.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/zmusslx020.tar.gz', 844800, 88779, '2007-12-25', 'zmusslx020', true );
	addLayerDesc('landcvi020l', null, 'Land Cover 1 Kilometer Resolution', '2006-04-08', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=LandCover&visCats=CAT-bio,CAT-bio', true );
    addDataItem('landcvi020l', 'GeoTiff', 'landcvi020l.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/landcvi020l.tar.gz', 8448000, 3966373, '2002-12-20', 'landcvi020l', true );
	addLayerDesc('lancovi200l', null, 'Land Cover 200 Meter Resolution', '2006-04-27', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=lancov&visCats=CAT-bio,CAT-bio', true );
    addDataItem('lancovi200l', 'GeoTiff', 'lancovi200l.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/lancovi200l.tar.gz', 444958720, 50904884, '2005-09-27', 'lancovi200l', true );
  addLayerDesc('lcdvrsi020l', null, 'Land Cover Diversity', '2006-04-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=Diversity&visCats=CAT-bio,CAT-bio', true );
    addDataItem('lcdvrsi020l', 'GeoTiff', 'lcdvrsi020l.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/lcdvrsi020l.tar.gz', 20838400, 14931054, '2002-12-20', 'lcdvrsi020l', true );
  addLayerDesc('moths0t', null, 'Moth Occurrence', '2006-04-11', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=MothC&visCats=CAT-bio,CAT-moth', true );
    addDataItem('moths0t', 'DBF', 'moths0t.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/moths0t.tar.gz', 1172992, 56214, '2002-02-11', 'moths0t', true );
	addLayerDesc('firplnp020', null, 'National Fire Plan - Hazardous Fuels Reduction Program 2004', '2006-05-27', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=firpln%3B1&visCats=CAT-bio,CAT-firpln', true );
    addDataItem('firplnp020', 'Shapefile', 'firplnp020.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/firplnp020.tar.gz', 14233600, 4586865, '2005-09-27', 'firplnp020', true );
	addLayerDesc('vgav90i1kml', null, 'Vegetation Growth - Average: 1990', '2006-05-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=vgav90%3B1&visCats=CAT-bio,CAT-bio', true );
    addDataItem('vgav90i1kml', 'GeoTiff', 'vgav90i1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/vgav90i1kml.tar.gz', 75479040, 5285750, '2005-12-14', 'vgav90i1kml', true );
	addLayerDesc('vgav91i1kml', 'vgav90i', 'Vegetation Growth - Average: 1991', '2006-05-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=vgav91%3B2&visCats=CAT-bio,CAT-bio', true );
    addDataItem('vgav91i1kml', 'GeoTiff', 'vgav91i1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/vgav91i1kml.tar.gz', 75479040, 5179459, '2005-12-14', 'vgav91i1kml', true );
	addLayerDesc('vgav92i1kml', 'vgav90i', 'Vegetation Growth - Average: 1992', '2006-05-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=vgav92%3B3&visCats=CAT-bio,CAT-bio', true );
    addDataItem('vgav92i1kml', 'GeoTiff', 'vgav92i1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/vgav92i1kml.tar.gz', 75479040, 4821103, '2005-12-14', 'vgav92i1kml', true );
	addLayerDesc('vgav93i1kml', 'vgav90i', 'Vegetation Growth - Average: 1993', '2006-05-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=vgav93%3B4&visCats=CAT-bio,CAT-bio', true );
    addDataItem('vgav93i1kml', 'GeoTiff', 'vgav93i1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/vgav93i1kml.tar.gz', 75479040, 5125674, '2005-12-14', 'vgav93i1kml', true );
	addLayerDesc('vgav94i1kml', 'vgav90i', 'Vegetation Growth - Average: 1994', '2006-05-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=vgav94%3B5&visCats=CAT-bio,CAT-bio', true );
    addDataItem('vgav94i1kml', 'GeoTiff', 'vgav94i1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/vgav94i1kml.tar.gz', 75479040, 5520011, '2005-12-14', 'vgav94i1kml', true );
	addLayerDesc('vgav95i1kml', 'vgav90i', 'Vegetation Growth - Average: 1995', '2006-05-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=vgav95%3B6&visCats=CAT-bio,CAT-bio', true );
    addDataItem('vgav95i1kml', 'GeoTiff', 'vgav95i1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/vgav95i1kml.tar.gz', 75479040, 5422690, '2005-12-14', 'vgav95i1kml', true );
	addLayerDesc('vgav96i1kml', 'vgav90i', 'Vegetation Growth - Average: 1996', '2006-05-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=vgav96%3B7&visCats=CAT-bio,CAT-bio', true );
    addDataItem('vgav96i1kml', 'GeoTiff', 'vgav96i1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/vgav96i1kml.tar.gz', 75479040, 5436016, '2005-12-14', 'vgav96i1kml', true );
	addLayerDesc('vgav97i1kml', 'vgav90i', 'Vegetation Growth - Average: 1997', '2006-05-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=vgav97%3B8&visCats=CAT-bio,CAT-bio', true );
    addDataItem('vgav97i1kml', 'GeoTiff', 'vgav97i1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/vgav97i1kml.tar.gz', 75479040, 5415873, '2005-12-14', 'vgav97i1kml', true );
	addLayerDesc('vgav98i1kml', 'vgav90i', 'Vegetation Growth - Average: 1998', '2006-05-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=vgav98%3B9&visCats=CAT-bio,CAT-bio', true );
    addDataItem('vgav98i1kml', 'GeoTiff', 'vgav98i1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/vgav98i1kml.tar.gz', 75479040, 5453839, '2005-12-14', 'vgav98i1kml', true );
	addLayerDesc('vgav99i1kml', 'vgav90i', 'Vegetation Growth - Average: 1999', '2006-05-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=vgav99%3B10&visCats=CAT-bio,CAT-bio', true );
    addDataItem('vgav99i1kml', 'GeoTiff', 'vgav99i1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/vgav99i1kml.tar.gz', 75479040, 5571485, '2005-12-14', 'vgav99i1kml', true );
	addLayerDesc('vgav00i1kml', 'vgav90i', 'Vegetation Growth - Average: 2000', '2006-05-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=vgav00%3B11&visCats=CAT-bio,CAT-bio', true );
    addDataItem('vgav00i1kml', 'GeoTiff', 'vgav00i1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/vgav00i1kml.tar.gz', 75479040, 5733278, '2005-12-14', 'vgav00i1kml', true );
	addLayerDesc('vgav01i1kml', 'vgav90i', 'Vegetation Growth - Average: 2001', '2006-05-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=vgav01%3B12&visCats=CAT-bio,CAT-bio', true );
    addDataItem('vgav01i1kml', 'GeoTiff', 'vgav01i1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/vgav01i1kml.tar.gz', 75479040, 5759237, '2005-12-14', 'vgav01i1kml', true );
	addLayerDesc('vgav02i1kml', 'vgav90i', 'Vegetation Growth - Average: 2002', '2006-05-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=vgav02%3B13&visCats=CAT-bio,CAT-bio', true );
    addDataItem('vgav02i1kml', 'GeoTiff', 'vgav02i1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/vgav02i1kml.tar.gz', 75479040, 5830366, '2005-12-14', 'vgav02i1kml', true );
	addLayerDesc('vgav03i1kml', 'vgav90i', 'Vegetation Growth - Average: 2003', '2006-05-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=vgav03%3B14&visCats=CAT-bio,CAT-bio', true );
    addDataItem('vgav03i1kml', 'GeoTiff', 'vgav03i1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/vgav03i1kml.tar.gz', 75479040, 5688231, '2005-12-14', 'vgav03i1kml', true );
	addLayerDesc('vgav04i1kml', 'vgav90i', 'Vegetation Growth - Average: 2004', '2006-05-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=vgav04%3B15&visCats=CAT-bio,CAT-bio', true );
    addDataItem('vgav04i1kml', 'GeoTiff', 'vgav04i1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/vgav04i1kml.tar.gz', 75479040, 5678491, '2005-12-14', 'vgav04i1kml', true );
	
	addLayerDesc('vgav05i1kml', 'vgav90i', 'Vegetation Growth - Average: 2005', '2006-05-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=vgav05%3B16&visCats=CAT-bio,CAT-bio', true );
    addDataItem('vgav05i1kml', 'GeoTiff', 'vgav05i1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/vgav05i1kml.tar.gz', 75479040, 5728764, '2006-04-14', 'vgav05i1kml', true );
	
	addLayerDesc('vgpk90i1kml', null, 'Vegetation Growth - Peak: 1990', '2006-05-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=vgpk90%3B1&visCats=CAT-bio,CAT-bio', true );
    addDataItem('vgpk90i1kml', 'GeoTiff', 'vgpk90i1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/vgpk90i1kml.tar.gz', 75479040, 6235315, '2005-12-14', 'vgpk90i1kml', true );
	addLayerDesc('vgpk91i1kml', 'vgpk90i', 'Vegetation Growth - Peak: 1991', '2006-05-14', null, 'chpbio', '/mapmaker?AppCmd=CUSTOM&LayerList=vgpk91%3B2&visCats=CAT-bio,CAT-bio', true );
    addDataItem('vgpk91i1kml', 'GeoTiff', 'vgpk91i1kml.tar.gz', null, 'http://dds.cr.usgs.gov/pub/data/nationalatlas/vgpk91i1kml.tar.gz', 75479040, 6373731, '2005-12-14', 'vgpk91i1kml', true );
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  addLayerDesc('efct05x', null, 'EPA Envirofacts Data - Superfund National Priorities List Sites', null, null, 'chpenvi', '/mapmaker?AppCmd=CUSTOM&LayerList=Superfund&visCats=CAT-enviro,CAT-enviro', true );
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